remove bootstrap
review comments
Merge pull request #3520 from devoncarew/devoncarew_reduce_styles

remove bootstrap
Adjust template to Polymer/platform having moved to Polymer/webcomponents
Merge pull request #3541 from ussuri/adjust-templates-to-new-polymer

Adjust templates to Polymer/platform having moved to Polymer/webcomponents
Merge remote-tracking branch 'upstream/master' into cde-polymer-designer
Small fixes